Sai Bolli

• Led end-to-end development to high-throughput digital payments platform using Java17, Spring Boot, and Microservices, ensuring 24/7 availability and PCI-DSS compliance.

• Developed scalable, reusable front-end modules with React.js, Redux, and TypeScript, enhancing user onboarding flows and reducing page rendering time by 40%.

• Engineered secure and performant REST APIs using Spring Security, OAuth2, and JWT, supporting millions of authenticated user sessions per month.

• Integrated backend services with PostgreSQL, MongoDB, and Redis, optimizing queries and caching strategies for real-time transaction insights.

• Utilized Apache Kafka to build asynchronous, event-driven communication across services, improving processing time for customer reward updates by 50%.

• Containerized services using Docker, orchestrated deployment pipelines with Kubernetes on AWS (EKS), and automated cloud provisioning with Terraform and CloudFormation.

• Built CI/CD pipelines in Jenkins and GitLab CI, incorporating automated tests, static analysis with SonarQube, and secure artifact promotion.

• Enforced rigorous testing standards using JUnit 5, Mockito, and Test Containers for backend; Cypress and Selenium for frontend regression suites.

• Integrated fraud detection APIs, AML systems, and internal risk engines to support compliance and enhance transaction security.

• Set up centralized monitoring and logging with ELK Stack, Prometheus, and Grafana, reducing mean time to detect (MTTD) production issues by 60%.

• Collaborated closely with product managers, architects, QA, and security teams in an Agile/Scrum environment using JIRA, ensuring biweekly delivery of sprint increments.

• Built enterprise-grade microservices using Java 8/11, Spring Boot, Spring MVC, Spring Data JPA, and Hibernate.
• Designed and implemented RESTful APIs and integrated with multiple internal and external systems.
• Developed front-end modules using Angular/React, including reusable components, state management, interceptors, and routing guards.
• Built messaging-driven features using Kafka, RabbitMQ, or event-streaming frameworks.
• Worked on cloud deployments using AWS EC2, Lambda, API Gateway, S3, RDS, CloudWatch.
• Ensured application quality by writing JUnit/Mockito tests, integration tests, and participating in code reviews.
• Implemented Angular 7 component router for navigation and the services to connect the web application to back-end APIs.
• Migrated individual components and services of this application from AngularJS to Angular 7, one module at a time. Used Tiles framework with struts to reduce the redundancy between JSP pages.
• Participated in a Scrum team and Agile Practices including TDD, BDD, and pair programming.
• Developed SOAP services and clients using Apache AXIS2, JAX-WS, WSDL, XML, XSD, JAXB framework.
• Worked closely with the configuration in the Tomcat application server and Apache Web server.
• Build Rest web service by building NodeJS Server in the back end to handle requests sent from the front-end jQuery Ajax calls.
• Used RESTful services to implement Web Services and Consumed and published JSON Web Services in the application. Developed Data layer using DAO patterns, ORM and Hibernate.
• Build Restful API web services using NodeJS used a full complement of Express, AngularJS, NodeJS, and DynamoDB to store and present assessments.

• Assisted in the design, development, and testing of Java-based applications under the supervision of senior developers.

• Wrote, debugged, and maintained clean, efficient, and well-documented Java code following object-oriented programming principles.

• Collaborated with the development team using tools like Git/GitHub for version control and task tracking.

• Participated in daily stand-ups, code reviews, and sprint meetings to understand Agile development workflows.

• Implemented small features and bug fixes in existing Java applications to improve functionality and user experience.

• Used frameworks such as Spring Boot and Hibernate for backend development and database integration.

• Assisted in writing and executing unit tests using JUnit to ensure software quality and reliability.